title: Negative ion FAB mass spectroscopy of some ribose alkylated 5'-UMP derivatives.
mesh_terms: D000478:Alkylation; D012266:Ribose / Q000378:metabolism*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014542:Uridine Monophosphate / Q000031:analogs & derivatives* / Q000737:chemistry*
chemical_list: D012266:Ribose; D014542:Uridine Monophosphate